"Whether you're Jew or Christian or Muslim, if you stand on the side of peace, if you stand on the side of living in peace and safety and security, then you come join us," said Matt Levin of the South Palm Beach County Jewish Federation, which hosted the gathering.

A number of community leaders spoke, including one rabbi whose speech was interrupted when an air raid siren could be heard coming from his pocket. The rabbi pulled out his phone and showed the congregation an app on his phone that alerts him whenever a rocket is launched over Israel.

Overall, the goal of the gathering was to let the people of Israel know they are not alone.

"Our values include peace and include hope," Steinhardt said. "We hope that this situation and all the belligerency will end."